# -*- coding: utf-8 -*-#
#-------------------------------------------------------------------------------
# 建立者:        潘炎珍  
# Name:         demo09
# Description:
# Author:       98745
# Date:         2019/2/28
#-------------------------------------------------------------------------------

dict={'h':'帮助','b':'自行车','g':'极客','c':'中国'}
print(dict.items())
for i in dict.items():
    print('key ',i[0],'value:',i[1])

print(('b','自行车') in dict.items())
item=dict.items()
dict['b']='自行车，摩托车'
print(item)

print(dict.keys())
for k in dict.keys():
    print(k)